A thick blanket of fog enveloped most parts of the region including Ludhiana, Amritsar, Jalandhar, Phagwara, Hisar, Narnaul, Ambala, Karnal as it reduced visibility considerably, throwing life out of gear.
Railway traffic was hit at Chandigarh railway station with several train running late because of fog.
Among other trains, Shatabdi (New Delhi-Kalka) was running late by nearly an hour, Himalayan Queen was delayed by 1.15 hours and Lucknow-Chandigarh Superfast was late by over 3 hours, official sources said here.
In Punjab, minimum temperature rose by five notches above normal to settle at 9.2 deg C in Amritsar. Ludhiana and Patiala had a low of 9 deg C and 10.4 deg C, up by three notches above normal, respectively.
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Among other areas in neighbouring state Haryana, Ambala had a low of 9.6 deg C, up by 3 degrees, while Hisar had a minimum of 12 deg C, rising by five degrees.
Narnaul and Bhiwani recorded minimums of 11.5 deg C and 10.6 deg C respectively.